Wolfgang has dealt with ancient coinages since his first semester at Tübingen University; there he wrote a masters thesis about classical Sicilian silver coinages. His doctoral thesis delivered to Bonn University was devoted to the silver coinage of ancient Tarentum. After travelling abroad around the Mediterranean for a year, he joined the staff of the German Archaeological Institute for a five year-term. He has also worked with the excavation teams at Bogazköy-Hattuša and Karatepe/Cilicia in Turkey for several seasons. He has published articles mainly in the field of Greek numismatics but on archaeological and papyrological topics as well, and has taught Classics and Ancient Numismatics as the Freie Universität, Berlin. His main interests are the archaic and classical coinages of the Greeks including their barbarous neighbours in both the Balkans and the Levant. While his most recent publication is devoted to the Athenian decadrachms, he is preparing a die-study of the gold, silver, and bronze coinages of Greek Cyrenaica.